(a) Find two power series solutions for and express the
Chapter 6, Problem 29E(choose chapter or problem)
(a) Find two power series solutions for \(y^{\prime \prime}+x y^{\prime}+y=0\) and express the solutions \(y_{1}(x)\) and \(y_{2}(x)\) in terms of summation notation.
(b) Use a CAS to graph the partial sums \(S_{N}(x)\) for y_{1}(x)\). Use N = 2, 3, 5, 6, 8, 10. Repeat using the partial sums \(S_{N}(x)\) for \(y_{2}(x)\).
(c) Compare the graphs obtained in part (b) with the curve obtained by using a numerical solver. Use the initial-conditions \(y_{1}(0)=1\), \(y_{1}^{\prime}(0)=0\), and \(y_{2}(0)=0\), \(y_{2}^{\prime}(0)=1\).
(d) Reexamine the solution \(y_{1}(x)\) in part (a). Express this series as an elementary function. Then use (5) of Section 4.2 to find a second solution of the equation. Verify that this second solution is the same as the power series solution \(y_{2}(x)\).
Text Transcription:
y^prime\prime+xy^prime+y=0
y_1(x)
y_2(x)
S_N(x)
y_1(0)=1
y_1^prime(0)=0
y_2(0)=0
y_2^prime(0)=1
y_1(x)
y_2(x)
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